Turbine for water-meters.



0.693307. PatntedFah. l8. I902.

J. SCHMITZ.

TURBINE FUR WATERIETERS:

I (Application filed Nov. 19, 1897.) (No Model.)

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JOSEPH SOHMITZ, OF COLOGNE, GERMANY, ASSIGNOR TO EMIL ZAUM, OF COLOGNE,GERMANY.

TU RBlNE FOR WATER-METERS.

SEEGIEIGATION forming part of Letters Patent N0. 693,807, dated February18, 1902.

Application filed November 19, 1897. $erial No. 659,197. (No model.)

To aZZ whom it may concern.-

Be it known that I, JOSEPH SCHMITZ, a subject of the King of Prussia,Emperor of Germany,residing at Oologne-on-the-Rhine,Prussia, Germany,have invented new and useful Improvements in Turbines for WaterMetersand Similar Purposes, of which the following is a specification.

This invention relates to an improved construction of turbines for watermeters and similar purposes.

The accompanying drawings show the construction of a water-meterdischarging'five cubic meters of water per hour.

Figure 1 is a vertical longitudinal section of the meter; Fig. 2, aplan; Fig. 3, a cross-section taken through worm Z Fig. 3, a similarsection taken through worm Z. Figs. 4:, 5, and 6 are details of one ofthe turbines.

The letters ct a represent a pair of turbines each composed of a bodyhaving longitudinal guide-channels c and a helicoidal head e. Theturbines are fixed on the spindle d in such a way that the channels 0face each other and communicate with opposite sides of a commoninlet-chamber g, which is formed intermediate the turbines.

The water entering chamber g through inlet I) flows in two streams inopposite directions through the channels (3, and striking the helicoidalheads e effect the rotation of the turbines to actuate through worm fthe mechanism by which the quantity of water passing through the meteris accurately measured. By causing the water to first enter the chamberg intermediate the turbines and to then flow in two diverging streamsthrough the latter the turbines will float freely under the pressure ofthe water, so that friction is avoided and a very perfect registeringaction is obtained.

If by closing the cock of the water-pipe (not shown) by Which the wateris admitted to the nozzle Z) of the meter the turbines are set at rest,they fall by their own weight upon a pivot h, consisting of a hardstone, so that in starting the apparatus friction is avoided.

From the inlet-nozzle b of the casing the water passes through a diskvalve 27, provided with a hollow shaft m, that terminates in a smalloutlet-nozzle m. Against the valve t' is held by spring 0; a collar tsliding on shaft on and adapted to open and close the valve. Onthe shafton are furthermore mounted a pair of perforated disks 7t and 10 of whichthe disk k by means of worm Z, may be so turned while the meter is inoperation that the cross-section of the water-passages may be regulatedto correspond to the water-pressure, the size of the passages beingincreased as the pressure is diminished, and vice versa. The Waterpasses from inlet 1) through valve 7) and disks 70 10 into the body ofthe casing to actuate the turbines a a and to thus operate theindicator.

If by partly closing the outlet-cock the counter-pressure of the waterin the meter becomes so high that the collar t closes against its seat1' and shuts 0d the main supply, a small jet of increased pressure willstill pass through hollow shaft m and the nozzle 'm to actuate theturbines. To adjust the force of this jet, the disk 11 may duringtheoperation of the meter-be rotated by means of a worm Z so as to changethe direction of the nozzle min relation to the upper turbine ct, and tocorrespondinglychange the effect of the jet upon such turbine. Theposition of the nozzle m is similar to the position of the disks k 70adjusted to correspond to the water-pressure, so that the power of thejet will not cause too violent a motion of the furbine.

What I claim is 1. The combination in a meter of a casing having aninlet, with a pair of perforated disks, a worm for adjusting said disksduring the operation of the meter, a pair of perforated helicoidalturbines having each a channeled body and a helicoidal head, a shaft onwhich the turbines are mounted, and an intermediate inlet-chamber withwhich the channeled bodies of the turbines communicate, substantially asspecified.

2. The combination in a meter of a casing with a rotatable valve havinga hollow shaft, a pair of adjustable perforated disks mounted upon saidshaft, and a pair of perforated helicoidal turbines within the casing,sub-- stantially as specified.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOSEPH SOl-IMITZ.

lVitnesses:

WILLIAM H. MADDEN, FRITZ STEM.

